(MONEY Magazine) – All stock fund categories dropped in May amid inflation fears. Despite a 5% loss this month, new Fidelity Magellan manager Harry Lange has improved performance by retooling holdings at the eighth largest stock fund. The bad news: The resulting distribution could leave you with a big tax bill.

THE 10 BIGGEST STOCK FUNDS

FUND AVERAGES

TOP-PERFORMING FUNDS

NOTES AND SOURCES: Data as of May 25 from Lipper, New York; 877-955-4773. Tickers represent the largest share class. The 10 Biggest Stock Funds are ranked by total net assets. [1] Annualized. [2] Closed to new investors. [3] Includes performance-based fee. N.A.:Not applicable or not available.